MATRIX EMPLOYING SEMICONDUCTOR SWITCHING CIRCUIT

摘要

Crosspoint switching array, each crosspoint switching circuit including silicon controlled switches for connecting signal lines of one group to signal lines of another group. Each switching circuit includes a multiple-collector transistor having its emitter connected directly to the control line of one group of lines and its base connected directly to the control line of one group of lines and its base connected directly to the control line of the other group. The gate electrode of each silicon controlled switch is connected through a blocking diode to separate collector electrodes of the multiple-collector transistor. Coincident pulses on the control lines cause current to flow in the transistor thereby switching the silicon controlled switches to conduction and providing signal paths between the two groups of lines.